So relax. Don’t be paranoid.

Still it was legal to fire you for failing to inform about the card before moving away from the register.

The Drum rotates and comes past the developer roller of the cartridge. This developer roller is a rubber roller with a tin layer of toner which is also charged at -700 volts. (partially by static electricity from friction, partially from the high voltage power supply)

Wherever the Drum is still charged at -700 volts, there is no difference in potential and there is no electrostatic attraction. Wherever the Drum is charged less than -700 volts, toner particles (which is basically plastic dust) will be attracted to the drum. The lower the charge that is left on the drum, the more toner is attracted and the darker the color will be. This is also the reason laser jet printers are not very good at printing very light colors, it’s like picking up one paper clip out of a pile of paper clips with a magnet.

How the process continues depends on what kind of printer you have. In all cases, the drum rotates and again through a difference in potential the toner is transfered to either the paper or to an Image Transfer Belt which temporarily stores the toner image before transferring it to paper.

The drum keeps rotating, is cleaned, recharged to -700 volts, comes past the laser again etc.

A color laser jet printer can work by simply being 4 laserjets on top of each other (one for each color), or by using an Image Transfer Belt. The Drum forms the image for the first color, which is then temporarily stored onto the Transfer Belt, then creates the second image which is again stored onto the Transfer Belt exactly on top of the first image, etc. Once all images are on there, it’s transferred to the paper.

Finally, the paper goes through the Fuser unit. This is quite simply two rollers at 190°C which melts the plastic onto the paper.

text appearance is clearer, printing is normally quicker, colour is obviously out of the question, paper is plain photocopy paper which is cheaper than inkjet paper

the cartridge that comes with the printer generally has half the toner that you would expect in a replacement one but can typically last up to 3000 pages (full replacements up to 6000) depending on model of printer.

best bet is to look at the HP site in your country and do some boning up.

if you never print colour, i would receommend lasers every day as they are less hassle, last longer, cheaper to run, ink never dries up and becomes useless (its already a dry powder) and are generally easier to find parts for when the do break

The toner itself will cost about $ 50-$ 100 depending upon where you are and will actually printer around 2500 pages (out of the box you get a trial cartridge which is not as full as the replacements)

If you are doing a very high volume of printing, this will not be the printer for you. However for home and small office use this is a very good and economical unit.

Print order is an option on just about any printer. Just go into printer preferences and make it print last page first or first page last.

You can also collate or not…

Print order is an option on just about any printer. Just go into printer preferences and make it print last page first or first page last.

You can also collate or not…